Zoo Med Ultra Sun Mini Compact Fluorescent. Zoo Med Super Daylight Self Ballasted Compact Fluorescent Lamp simulates natural sunlight and brings out the full colors of fish. Works great with nano tanks, marine aquariums, planted tanks, hermit crab tanks and community tanks. 6500K Super Daylight lamp that simulates natural sunlight. Excellent for Nano tanks! 6500K Super Daylight lamp (10 watt) Simulates natural sunlight. Excellent for Nano tanks. Self ballasted compact fluorescent lamp.